Norden Category 5 Multipair cables exceed Category 5 / Class D specification. It is a high performance cable suitable for 100Base-T. Gigabit Ethernet, 155 Mbps ATM, TP-PMD audio, multimedia and telephone networks. By design. Norden cables are manufactured to the highest quality standards, design requirements and materials to ensure that every box provides significant margin over ANSI/TIA-568.2-D specifications for NEXT, Power Sum NEXT and Insertion Loss across the entire channel.